Inici
→
Recerca: articles, congressos, llibres
→
Departament de Tecnologies de la Informació i les Comunicacions
→
Congressos (Departament de Tecnologies de la Informació i les Comunicacions)
→
Visualitza Congressos (Departament de Tecnologies de la Informació i les Comunicacions) per autoria

Visualitza Congressos (Departament de Tecnologies de la Informació i les Comunicacions) per autoria "Herranz, Javier"

Ara mostrant els elements 1-4 de 4

CCA2-secure threshold broadcast encryption with shorter ciphertexts

Daza, Vanesa; Herranz, Javier; Morillo, Paz; Ràfols, Carla (Springer, 2007)

In a threshold broadcast encryption scheme, a sender chooses (ad-hoc) a set of n receivers and a threshold t, and then encrypts a message by using the public keys of all the receivers, in such a way that the original ...
Constant size ciphertexts in threshold attribute-based encryption

Herranz, Javier; Laguillaumie, Fabien; Ràfols, Carla (Springer, 2010)

Attribute-based cryptography has emerged in the last years as a promising primitive for digital security. For instance, it provides good solutions to the problem of anonymous access control. In a ciphertext- policy ...
Identity-based lossy trapdoor functions: new definitions, hierarchical extensions, and implications

Escala, Alex; Herranz, Javier; Libert, Benoît; Ràfols, Carla (Springer, 2014)

Lossy trapdoor functions, introduced by Peikert and Waters (STOC’08), have received a lot of attention in the last years, because of their wide range of applications. The notion has been recently extended to the identity-based ...
Short attribute-based signatures for threshold predicates

Herranz, Javier; Laguillaumie, Fabien; Libert, Benoît; Ràfols, Carla (Springer, 2012)

Attribute-based cryptography is a natural solution for fine- grained access control with respect to security policies. In the case of attribute-based signatures (ABS), users obtain from an authority their secret keys as a ...